This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: Which of the following is a definition of the isoelectric point of an amino acid? a. The pH at ... (Read 92 times)

captainjonesify

  • Hero Member
  • *****
  • Posts: 543
on: Aug 23, 2018
Which of the following is a definition of the isoelectric point of an amino acid?
 a. The pH at which an amino acid has no net charge
  b. The pH at which the -NH2 group is completely protonated
  c. The melting point of an amino acid
  d. The conductivity of a 1 M solution of an amino acid in water

Question 2

What is the approximate value of the pKa of the -NH3+ of amino acids?
 a. 2
  b. 5
  c. 9
  d. 12

Question 3

What is the approximate value of the pKa of the -CO2H of amino acids?
 a. 2
  b. 5
  c. 9
  d. 12


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

T4T

  • Sr. Member
  • ****
  • Posts: 348
Reply #1 on: Aug 23, 2018
Answer to Question 1

a

Answer to Question 2

c

Answer to Question 3

a


captainjonesify

  • Hero Member
  • *****
  • Posts: 543
Reply #2 on: Aug 23, 2018
Both answers were spot on, thank you once again


T4T

  • Sr. Member
  • ****
  • Posts: 348
Reply #3 on: Aug 23, 2018
Great! Please up vote :D


« previous next »
 

Did you know?

Historic treatments for rheumatoid arthritis have included gold salts, acupuncture, a diet consisting of apples or rhubarb, nutmeg, nettles, bee venom, bracelets made of copper, prayer, rest, tooth extractions, fasting, honey, vitamins, insulin, snow collected on Christmas, magnets, and electric convulsion therapy.

Did you know?

The U.S. Pharmacopeia Medication Errors Reporting Program states that approximately 50% of all medication errors involve insulin.

Did you know?

Inotropic therapy does not have a role in the treatment of most heart failure patients. These drugs can make patients feel and function better but usually do not lengthen the predicted length of their lives.

Did you know?

Only one in 10 cancer deaths is caused by the primary tumor. The vast majority of cancer mortality is caused by cells breaking away from the main tumor and metastasizing to other parts of the body, such as the brain, bones, or liver.

Did you know?

As many as 28% of hospitalized patients requiring mechanical ventilators to help them breathe (for more than 48 hours) will develop ventilator-associated pneumonia. Current therapy involves intravenous antibiotics, but new antibiotics that can be inhaled (and more directly treat the infection) are being developed.

Block Diagram of Single-stage Pressure System for Dual-Stage Pressure Production of Nitric Acid Block Diagram of Single-stage Pressure System for Dual-Stage Pressure Production of Nitric Acid
The a-Oxidation Pathway for Phytanic Acid Oxidation The a-Oxidation Pathway for Phytanic Acid Oxidation
Catabolism of purinenucleotides to uric acid Catabolism of purinenucleotides to uric acid
Finding the length given total distance and distance longer than other point Finding the length given total distance and distance longer than other point
Addition of 0.0125 mol HCl to 150 mL of a 0.150 M formic acid/0.100 M sodium formate buffer ... Addition of 0.0125 mol HCl to 150 mL of a 0.150 M formic acid/0.100 M sodium formate buffer ...
Sprinting, running and lactic acid fermenation Sprinting, running and lactic acid fermenation
Video: Summary of glucose catabolism

For a complete list of videos, visit our video library